Envelope



E. F. AHLQUIST- Aug. 28, 1928..

ENVELOPE Filed Dec. 27, 1924 my f 6 Il Patented Aug. 28, 1928.

'uN-iran STATES' vParrainortiche.A

EUGENEF. AHLQUIST, oF M INNEAroLIs, MINNESOTA.

ENVELOPE.

This invention relates to an improvement in envelopes, and has for its object to prothe badcportion is vide anew-and improved device of this description. The invention has` as a further object to provide an envelope which will be strong and durable, Vand arranged so that i reenforced sothat there will be no projecting part which will catch on adjacent envelopes, partitions or other devices, and whichilnight by such engagement be injured orltorn loose. The invention has further objects Whichwill be more particularly pointed out. inthe following description `Referring now to the drawing,

F ig. 1 is a back view showing one forni of envelope embodying the invention.

Fig. 2 is an end view of the envelope illustrated in Fig. 1. Fig. 3 is an `enlarged sectional view taken online 3-3 ofFig. 1.

Fig. 4 is an enlarged sectional View taken on 4line 4 4 of Fig. 1. v

-Fig. 5 is a view of the cornerlofy the envelope with the parts-separate.

` Fig. G is a. view similar to Fig. 5` showing the method of connecting the parts.

Fig. 7 is a view showing a modified construction.` 1

Fig. 8 is an enlarged sectionalview taken on line 8-8 of Fig. 7 9 is an enlarged sectional `view taken on line 9 9 of'Fign?.l i

.Y Fig. l0 isa view `of the'corner of the envelope showing the parts separate. Fig.V 11 is a view; similar to Fig. 10 show.,- iner the method of assembling the parts.

Referring now tothe drawings, I have shown my invention as applied tol anenvelope of the expansion type. In this 'con- `struction thev envelope is provided .with 'a V.front portion 1 anda back portion 2, said portions being connected at their ends and bottom by the connecting member 3, lvhich in this instance 1s shown as an expansion member. The back portion 2 is provided with a flap 4, which passes over and covers the upper portion of the envelope in the usual way. The connecting member 3 is provided with' the' connecting piece 5 by means of which it is'connected with the front and back portions of the envelope, the connection usuallybeing made bv someadhesive material, these connecting pieces being substantially parallel with the front and back portions 1, being illustrated in the connecting member Application led'December 27, 1924. Serial No. 758,354.

dotted lines in Fig. 1. In the construction as shown Figs. l to l inclusive, 'the back portion 2 at each end isV provided with a slot 6 clearly shown in Fig. 5. 'This slot is diagonal and runs to thetop of the back portion thus providing a section` 7, which may beV bent out of alignment with the back portion. The main part of the back portion is on the outside of the connecting piece or pieces 5 of the connecting element, while the section 7 is bent inwardly so as to be in the inside thereof, as shown in Fig. `F ig. 5 shows thev parts before they arcassembled and Fig.

show the parts after they are assembled. In the assembling of the parts the section 7 at each end of the back portion is bent. inwardly and placed on the inside of connecting piece 5, the remaining portion of the back` being on the outside of piece 5, andthe parts are then connected together in any desired manner terial.

It will thus beseen thatl when the parts are assembled, the connecting pieces 5 of 3 are continuous so that the strength thereof is not diminished, and that the'baclr portion has a part which is bent outo'f the plane oi the bacir or out of alignment therewith, and which engages a portion of the inner continuous face of the connecting piece 5,l thus preventing the back from being pulled loose from the connecting piece. It; is important in this construction that the'connecting piece 5 be continuous and unbroken at the point where `the portion or" the back-which is on the inside thereof ends and the portion of the back which is on the outside thereof begins, or viceversa..

It will further be noted that theedge of the back portion on the outside of `the Con-` necting piece 5 faces upward so that when the envelope is slipped down among other envelopes or to the side oi' a partition or other obstruction there is no projection to catch thereon, the exteriorface of the back portion projecting out further than the exposed portion of the connection piece.

In Figs.` 7 toll I have shown a modified construction. In this construction the slot 6a in the back instead of being diagonal or inclined runs substantially straight across the back as clearly shown in Fig. 10. This provides ai Vsection 7a of the back portion (see Figs. 10 and 11) which is received on 6 shows the parts as they are being assembled, while'Figs. 1, 3 and ll' as by means of adhesivevmailo the inside of the connecting piece 5, the remaining portion ot the back being on the outside thereof.

Fig. l0 shows the parts before they are assembled, and Fig. l1 shows the parts as they are being assembled.

Figs. 7, t) and E) show the parts after they are assembled.

lt ivill be seen that in this latter construction the main part of' the back portion 2 projects beyond the exposed portion of the connecting pieve 5 so that there is no projection to catch `when the envelope is slid down between other devices.

The section 7 and the remaining part of the hack portion is connected with the connecting piece 5 in some suitable manner as h v adhesive material.

The inner lining 9 may be placed on the inside of the envelope it desired.

It will thas be seen that l have here provided an envelope reentoreed at the point where. snch reentorcement is important and that l have secured this reentorcement bv simply providing a section of the back which is bent outI of alignment with the remaining portion, and which engages the connecting piece 5, the connecting piece itself being continnons at the point which connects the main portion of the back and the bent section thereof. By connecting the loiver section of the back to the outer part of the connefting piece, I provide a construction Which presents no obstruction when the envelope is slipped dovvn among other envelopes, or in a compartment. By attaching the upper section of the back to the inner side ot the connecting piece, and connecting the flap with this section, I provide a strong rein* forced envelope.

I claim:

1. An enevolpe comprising a Aliront portion and a back portion, connecting pieces at the ends connecting the front and back portions together, said connecting pieces each having a portion which entends parallel with the back portion of the envelope and which is continuons, said back portion at the edge having tivo sections bent ont ot alignment, one section attached tothe onterportion of the connecting piece, and the other section attached to the inner portion of the connecting piece.

Q. An envelope comprising front and back portions, connecting pieces at the ends connecting the front and back portions together, said connecting pieces at each end having portions extending parallel With said hack portion, said back portion at each end having two sections out of alignment, the bottoni section being located on the outside of the connecting pieces, and the top section on the inside of said connecting pieces.

3. An envelope con'iprising `lront and back portions, connecting pieces at the ends connecting the front and hack portions together, said connecting pieces at each end having portions extending parallel with said bi ck portion, said back portion at cach end having two sections ont of alignment, thc bottom section being located on the outside ot the connecting pieces, and the top section on the inside of said connecting pieces, a llap connected with said back portion and having its ends connected with the sections thereof on the inside of the connecting pieces.

l. An envelope comprising lront and back portions, connecting pieces at the ends connecting them together, the ends oil the back portion being provided with slots near the top thereof, the connecting pieces heilig inserted in said slots, the portions ot the end piece above the slots being attached to the inside ot said connecting pieces and the portions ot the end pieces below the slots being attached to the outside of said connecting pieces.

5. An envelope comprising front and back portions, connecting pieces at the ends connecting the front and back portions together said connecting pieces at each end having portions extending parallel with thel back portions, said portions being continuons, all the parts ot' each portion being in the same plane, thel edges of the back portion being provided with slots into which the parallel portions of the connectingr pieces are received, and a flap connected with -said back portion.

(3. An envelope comprising front and back port-ions connecting pieces at the ends connecting the front and back portions together, said connecting pieces at each end having portions extending parallel with thc hack portions, said portions being continuons, all the parts of each portion being in the saine plane, the edges of the back portion being provided with slots into which the parallel portions of the connecting pieces are received, and a tlap connected with said hack portion, said back portion when the parts are in position being flat and tree 'from projections.

Signed at Minneapolis county ot Helmepin and State ot Minnesota, this lith day of November, 1924.

EUGENE F. AHLQUIST. 

